Stovepipe ventilator



Nov. 27, 1928.

W. J. HULL STQVEPIPE VENTI'IJ'ATOR Filed May 15, 19 28 IINVENTOR.

Wm. J. H ull, BY wamavm/fl A TTORNE Y.

Patented Nov. 27, 1928,

tsetse? VIILLIAM J. HULL, or DUBLIN, INDIANA.

s'rovnrrlen VENTILATOB.

Application filed May 15,

The invention has relation to stovepipe ventilators, having for an object to provide an improved device of this desci'ipt on, of simple nature, capable of ready application and of economical manufacture.

The invention consists in the novel construction and combinations of parts, ashoreinafter set forth.

In the accompanying drawings illustrating the invention, Figure 1 is a central longitudinal section of the invention as applied;

Figure 2 is a similar view of the invention alone, with parts in initial engagement. I

Figure 3 is a section of the line 3-3, Figure 1, and

Figure 4 is a detail fragmentary perspective view showing a closurefor one of the perforations. V

In these drawings, the numeral 1 designates a joint of stovepipe, nearest the stove or furnace, and being criinped at one endto facilitate tight engagement with the ad acent pipe joint or with the collar of the chimney flue opening, and at its opposite end being uncrimped and smooth, said joint 1 being provided with openings or perforations 2 in its side walls, the number of said open ings being greater or less in accord with the particular circumstances, i. e., the nature of the room, the size thereof, etc, a kitchen requiring more openings than would a bedroom for instance. V

Fitting within said pi 3e point 1 and entered therein from the rear is a frusto conical pipe section 3, the rear end 4- of which is adapted on the outer side thereof to have tight wedging engagement with the smooth cylindrical rear end of the pipe section 1, and on the inner side thereof to have tight wedging engagement with the collar a of the furnace smoke flue, the forward end 5 of said section being considerably smaller in diameter and located adjacent to the forward end of pipe section 1 so that the two pipe sections 1 and 3 are spacedapart by an annular space 6 of wedge form in longitudinal section, and bounded on the outside by the cylindrical wall of the section 1 and on the inside by the frusto conical wall of the section 3. This space 6 is of greatest width at its forward end and contracts'to nothing at its inner end;

The section 3 which is of frusto conical form and inserted within the section 1, is provided with circumferential, flexible at? than that of the 1928. Serial No. 277,860

tachm ent strips or tongues 7 of spring nature,

with the inner wall of section 1, so that as section 3 is slid into section 1, said tongues 7 will spring into perforations 2 of section 1 and pass through and without the same and when the section 3 has been tightly engaged at its rear end with the rear end of section 1, the rear or root ends of tongues 7 will be on a line with the rear ends of perforations 2, so that when tongues 7 are bent revei'sely as shown in Figure 1 the section 3 will be held in position against rearward movement by said tongues.

Should it become necessary to remove the inner pipe section 3 for cleaning or other purpose, this may be readily done by bending the tongues 7 forwardly when section 3 may be withdrawn from section 1 rearwardly.

The simplicity of construction of the device and the small amount of material used therefor, reduces the cost to very little more usual stove pipe, whereas offensive odors, smoke, etc., are rapidly removed from the room. The device is found in practice to keepthe side walls and ceiling of the room in better condition, and it also eliminates danger of fire from overheated lues.

Should it be desired to close the perforations 2 of the pipe joint 1, this may be readily done by using covers 2 provided with wire attachments on the inner side thereof, said attachments being flexible and bendable to engage the portions of the pipe marginal to said perforations as shown in Figure 4.

I claim 1. A stove pipe ventilator, comprising a pipejoint having a plurality of perforations in its side walls, and an inner frusto-conical pipe section located within said pipe joint and spaced apart therefrom by an annular space of wedge form in longitudinal section, said inner pipe section having close wcdging engagement with said pipe joint at its rear end and at its, opposite end having flexible spring tongues engaging said perforations and reversely bent to prevent rearward move-- mentof said pipe section.

2. A stove pipe ventilator, comprising a pipe joint having a plurality of perforations in its side walls, and an inner frusto-conical pipe section located Within said pipe joint and spaced apart therefrom by an annular space of Wedge form in longitudinal section, said inner pipe section having at one end upon the outer side thereof elose-wedging engagelnent with said pipe joint and upon the inner side thereof close Wedging engagement with the collar of the smoke fiue of the furnaee, and at its other end having flexible spring tongues engaging said perforations and reversely bent to prevent rearward movement of said pipe section;

In testimony whereof I a'rfix my signature.

WILLIAM J. HULL. 

